A novel energy saving and exhaust reduction process,characterized by phosphoric acid concentration with the heat recovered from the DAP tail gas exhausted from the pre-neutralization reactor,is proposed for AP production,which results in the energy consumption reduced by 31.

For problems occurred during the production after upgrade of the tube and shell type graphite heat exchanger and axial flow pump equipment of the phosphoric acid concentration system for DAP production,a revamp scheme for parallel use of a new train and an old train of graphite heat exchanger and axial flow pump with different type and size is adopted.

Study on technology for production of IMAP with concentrated phosphoric acid;

Application of water-reducing bulking agent in the production of calcium superphosphate;

Impact of mixing phosphate ores on calcium superphosphate production;

Determination of sulphate from calcium superphosphate by gravimetric analysis of barium sulphate was affirmed, which was simple and suitable for the analysis of industrial product with high accurate and good fidelity, with absolute deviation of 0.

Structural Improvement of 5 t Bucket Grab in SSP Curing Warehouse;

Study on the Application of Active & Porous Agent in SSP Production;

The Application of LGQ Type Gauger in SSP Production;

Study on quality improvement of single superphosphate

Using pot experiment,the transformations of different forms and the bioavailability of added Pb in soil blended with single superphosphate(SSP) were determined.

Micro-wave drying method,which is used to determine the water content in single superphosphate,is characterized by high-leveled precision,simple operation,easy-controlled operating conditions,and fast analyzing speed with RSD=(n=6)1.